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Browsing by Author "Srivastava, J. B"

Browsing by Author "Srivastava, J. B"

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  • Multicolour surface photometry of galaxies : Mrk 35 and Mrk 799 
    Chitre, A; Joshi, U. C; Srivastava, J. B (Astronomical Society of India, 1996)
    Imaging photometry of two peculiar galaxies Mrk 35 and Mrk 799 has been carried out using a CCD camera and broad band filters. Both the galaxies are highly disturbed and the morphologies of the galaxies are quite complex. ...
  • Photographic observations of comet Swift-Tuttle (1992t) 
    Joshi, S. C; Srivastava, J. B; Rautela, B. S; Sanwal, B. B (Astronomical Society of India, 1995)
    Positions of comet Swift-Tuttle (1992t)have been measured from photographic plates taken at the Cassegrain focus of the 104-cm telescope of Uttar Pradesh State Observatory (UPSO).
  • Site characterization for the UPSO-TIFR telescope 
    Sagar, R; Uddin, W; Pandey, A. K; Stalin, C. S; Mohan, V; Sanwal, B. B; Gupta, S. K; Yadav, R. K. S; Durgapal, A. K; Joshi, S; Kumar, B; Gupta, A. C; Joshi, Y; Srivastava, J. B; Chaubey, U. S; Singh, M; Pant, P; Gupta, K. G; Padalia, T. D (Astronomical Society of India, 2000)
    The Uttar Pradesh State Observatory, Naini Tal and Tata Institute of Fundamental Research, Mumbai plan to install jointly a 3 metre size optical telescope at Devasthal located east of Naini Tal about 50 km by road. The ...
  • Sky transparency over Naini Tal : A retrospective study 
    Kumar, B; Sagar, R; Rautela, B. S; Srivastava, J. B; Srivastava, R. K (Astronomical Society of India, 2000)
    We present an analysis of the atmospheric extinction coefficients measured during 1964 to 1999 in broad-band photometric passbands at U.P. State Observatory, Naini Tal. The extinction properties are also studied from the ...
  • Spectrophotometric observations of comet Hale Bopp (C/1995 O1) 
    Rautela, B. S; Joshi, G. C; Srivastava, J. B (Astronomical Society of India, 2000)
    Haser Model production rates of CN and C2 in the coma of the comet Hale-Bopp (C/1995 O1) have been obtained. Molecular production rate, size of the nucleus and continuum flux at 484.0 nm have further been analysed to get ...
  • Spectrophotometric observations of the comet Swift-Tuttle (1992t) 
    Sanwal, B. B; Rautela, B. S; Mahendra Singh; Srivastava, J. B (Astronomical Society of India, 1993)
    Periodic comet Swift-Tuttle (1992t) period 135 years was observed with 104 cm reflector of Uttar Pradesh State Observatory, Naini Tal, using OMA (Optical Multichannel Analyser) reticon array detector in the visible region ...

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